Pittsburgh PA: View of Gateway Center 1 progress photographs - 1951. Gateway Center, a four-building office campus that is a centerpiece of the Downtown Pittsburgh business district. Serving as the key piece of Pittsburgh's Renaissance 1, Gateway Center and the original Pittsburgh Hilton shaped the Pittsburgh Point for over 30 years. Gateway Center totals nearly 1.5 million square feet of space on 8.9 acres, along with the complementing landscaped plaza, underground walkways and parking.